Here's who's sitting down on the couch on the late night shows.

• Charlie Rose: William F. Buckley Jr. and Naomi Klein
• The Late Show with David Letterman: Alec Baldwin and Shakira (repeat)
• Jay Leno: George Clooney, The Zimmers, and Rihanna (repeat)
• Jimmy Kimmel Live: Seann William Scott, Dan Fogler, and Gerry Phillips (repeat)
• Tavis Smiley: James Taylor (repeat)
• Late Night with Conan O'Brien: Matthew Broderick, Bonnie Hunt, and John Mayer (repeat)
• The Late, Late Show with Craig Ferguson: Eric Bana, Julia Sweeney, and Fountains of Wayne (repeat)
• Last Call with Carson Daly: Jimmy Smith, Doug Anderson, Dan Dunn, and Plain White T's (repeat)

• At 8, NBC has a new Singing Bee, followed by a new Dateline.
• The CW has a new Smackdown! at 8.
• PBS has a new NOW at 8, followed by new episodes of Washington Week and Bill Moyers Journal.
• Disney has High School Musical 2 at 8.
• At 8:30, ESPN has The Emerald Bowl.
• At 9, Sci-Fi has the movie Elf.
• At 9:20, BBC America has a new Catherine Tate Show.
• At 10, ABC has a new 20/20.
• TCM has the movie Detective Story at 10.

Check your local TV listings for more.